Web cutting mechanism



1934- c. L. SHIPLEY WEB CUTTING MECHANISM Filed Nov. 18, 1931 I I INVENTORI Patented Aug. 1, 1934 UNITED STATES PATENT o -Fics of New York; Irving Trust Company receiver in equity of said R. Hoe & Co., Inc.

Application November 18, 1931, Serial No, 575,730

Claims. (01. 210-50) This invention relates in general to sheet control mechanism for printing machines having for its principal object the provision of an .improved sheet control mechanism that will prevent the I premature displacement of the sheet from the cutting cylinder until it has been carried around the periphery of the latter for the purpose of association with the sheet carried by the folding cylinder.

Another object is to provide an improved knife or cutting box assembly for use in connection with cutting and folding cylinders, that will obviate the tendency of the conventional knife box assembly of the cutting cylinder to thrust the sheet prematurely therefrom until it has been combined or associated with the sheet on the folding cylinder when associating sheets to form'a collected product.

A further object is to provide a novel knife or cutting box assembly for use in connection with cutting cylinders which may be instantly substituted for the conventional knife or cutting boxes therein, and'which will prevent the pre-v mature displacement of the sheet on cutting cylinders employing conventional types of knife or cutting box assemblies.

A still further object of the invention is to provide novel interchangeable knife boxes which may be quickly substituted, one for another, in rotary cutting cylinders with a view to optionally cutting a non-collected product or to cut and associate a collected product without interference with the operation of the collecting mechanism. It is also an object of the invention to provide a sheet control mechanism of generally improved construction, whereby the device will be simple,

durable and inexpensive in construction, as well as convenient, practical, serviceable, and efficient in its use.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts, and in the details of construction hereinafter described and claimed, it being understood that various changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention. 4

illustrated in the-accompanying drawing which shows a fragmentary transverse sectional view of such parts of a sheet and web cutting and folding mechanism as will suflice to illustrate the -;present invention. I

"The preferred embodiment of the invention isnp 0 sp a d f om t e Su ac 0 the r0- In the preferred form of the invention, A and B designate a cutting cylinder and a folding cylinder respectively.

The folding cylinder B is secured to a shaft 11 and is provided with one or more of sheet or web oo taking pins 12, fastened on arms 13, operably connected to rockingly mounted shafts 14.- A folding or tucking blade 15, fastened to a shaft 16, suitably secured to the cylinder B, is adapted to en gage the sheet or associated sheets 17, positioned 55 on the lower portion of the cylinder B and thrust or tuck sameiinto the bite or nip of the foldingofl rollers 18, 19,which are secured to shafts 20, 21. The usual cutting block or abutment 22, is suitably secured to the cylinder B for coaction with 7 the cutting knife of the cylinder A. The folding cylinder B is of conventional construction and is described merely for the purpose of indicating the relation and coaction of the parts to those ofthe cutting cylinder A, new to be described.

The cutting cylinder A, which is secured to a shaft 10, isprovided with a recess 23 in which the box 24 of my interchangeable, and insertable knife box assembly C may be detachably secured. A cutting knife or blade is secured to the box 24 so as by a pin 30 and rests on a plate 26 or the-like. On one side of the blade 25, a non-projecting or fixed cheek-block 2'7 is secured in juxtaposition and lagging relation to the cutting blade 25, while on the other side, a movable cheek-block 28, arranged in leading relation to the blade 25 and provided with a hole 29 to loosely receive the pin 30, is yieldingly or resiliently supported by a. spring 31, suitably secured within the pocket formed between the lower end of the movable. block 28 and the plate 26.

A sheet taking or engaging pin 32 connected to an arm 33, secured to a shaft 34,. is provided for engagement anddisengagement with the web W in the usual manner when the folding and cutting cylinders are rotated in the direction indicated by the arrows, for the cutting and folding of the collected sheets 1'7, mentioned above.

By inspection of the drawing it will be seen by reason of the noneprotrusion of the lagging cheekblock from the cutting cylinder A, that thepor- ,tion of the'web W, maintained immediately thereover by the adjacent pin 32, is now prevented from being thrust away from engagement with tating cuttingcylinderA which will now carry it completely around its periphery-until cut by the knife 25 to form the lowermost of the sheets shown at the lower portion of the folding cylinder B, as hereinafter described.

In operation, further rotation of the cutting and folding cylinders A andB will convey the cut sheet and the web W together to the position shown where thewebhasbeencuttoformthe 7 of a conventional device by. removing the single screw and then to insert the box containing the non-projecting block and the movable block in order to achieve the results above indicated, thus greatly enhancing the operating efiiciency of a web cutting and folding ,mechanism of the general character indicated. In a word, my device may be conveniently applied in a few moments to practically any printing machinery employing conventional rotary folding and cutting mechanismofthetypeindicated.

I am aware that the invention may be embodied in other specific forms without departing from the spirit or essential attributes'thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive, reference being had to the appended claims rather than to tbeforegoing description to indicate the scope of the invention.

What I claim is:

- 1. In a cutting and folding mechanism for a printing machine, a folding cylinder having a cutting abutment and sheet taking pins, a cutting cylinder having a cutting box and sheet taking pins operable to form a collected product; said cutting box including a cutting knife, 1:. yieldingly supported externally protruding cheek-block on the leading side of said knife, and a rigidly supported fixed cheek-block on the lagging side of the knife, said fixed cheek-block having its outer edge in non-projecting relation to the periphery of the cutting cylinder.

2. In a cutting and folding mechanism for a printing machine, a folding cylinder having a cutting abutment and sheet taking pins, a cutting cylinder having a cutting box and sheet taking pins operable to form a collected product; said cutting box including a cutting knife, a yieldingly supported cheek-block projecting from the cylinder on the leading side oi the knife and o a fixed cheek-block on the lagging side of the knife supported with its outer edge in non-projecting relation with the periphery of the cutting cylinder. I

3. An insertable interchangeable knife box assembly having a divided cheek-block composed of a non-projecting fixed part and a yieldingly mounted movable part, said non-projecting part, when said assembly is in operation, being in lagging relation to said movable part.

4. As an article of manufacture for'use in connection with paper cutting and folding mechanism having a cutting cylinder anda folding cy1-,

box on either side of the paper cutting element.

5. As an article of manufacture, a-knife box assembly adapted to replace when required conventional knife box assemblies in cutting cylin-' L. SHIPLEY. 

